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Which of the following code blocks correctly splits the managerName column from DataFrame storesDF at the space character into two new columns named managerFirstName and managerLastName?
A sample of DataFrame storesDF is shown below:
storeId open openDate managerName
0 true 1100746394 Vulputate Curabitur
1 true 944572255 Tempor Augue
2 false 925495628 Aliquam Et
3 true 1397353092 Faucibus Orci
4 true 986505057 Sed Fermentum